ICD-10-CM > M00-M99 > M05-M14 > M12 > M12.2 > M12.22 M12.22 Villonodular synovitis (pigmented), elbow Non-Billable/Non-Specific Codes M12.221Villonodular synovitis (pigmented), right elbowM12.222Villonodular synovitis (pigmented), left elbowM12.229Villonodular synovitis (pigmented), unspecified elbow